The seller says the body was made by Austin as an x-ray lab? Its a door at the back, one on the left hand side, (again a pedestrian door) and then at the front right hand side a 'drop down door', a bit similar to a front unload horse trailer. Except, with this door it is meant to hinge down until parallel with the ground, at which point a metal prop frame swings under and supports it. Dimensions roughly 13' x 7,3". Only have a very poor pic of it at the moment, here it is